| ost::IPV4Mask(3) | Library Functions Manual | ost::IPV4Mask(3) |
ost::IPV4Mask - Internet addresses used specifically as masking addresses (such as ' 255.255.255.0') are held in the IPV4Mask derived object.
#include <address.h>
Inherits ost::IPV4Address.
IPV4Mask (const char *mask)
Create the mask from a null terminated ASCII string such as '255.255.255.128'.
IPV4Address & operator= (unsigned long addr)
Allows assignment from the return of functions like inet_addr() or htonl()
__EXPORT IPV4Host operator & (const
IPV4Host &addr, const IPV4Mask &mask)
Masks are usually used to coerce host addresses into a specific router or
class domain.
Internet addresses used specifically as masking addresses (such as ' 255.255.255.0') are held in the IPV4Mask derived object.
The separate class is used so that C++ type casting can automatically determine when an IPV4Address object is really a mask address object rather than simply using the base class. This also allows manipulative operators for address masking to operate only when presented with a Masked address as well as providing cleaner and safer source.
Author:
Create the mask from a null terminated ASCII string such as '255.255.255.128'.
Parameters:
Allows assignment from the return of functions like inet_addr() or htonl()
References ost::IPV4Address::operator=().
Masks are usually used to coerce host addresses into a specific router or class domain. This can be done by taking the Inet Host Address object and 'and'ing it with an address mask. This operation can be directly expressed in C++ through the & operator.
Returns:
Parameters:
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| Wed Oct 31 2018 | GNU CommonC++ |